content: /*
   * Copyright 2011-2016 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package ix;
  
  import java.util.Iterator;
  
  import org.junit.*;
  
  public class ReplayTest {
  
      @Test
      public void normal() {
          final int[] counter = { 0 };
          Ix<Integer> source = Ix.range(1, 5)
                  .doOnNext(new IxConsumer<Integer>() {
                      @Override
                      public void accept(Integer v) {
                          counter[0]++;
                      }
                  })
                  .replay();
  
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
  
          Assert.assertEquals(5, counter[0]);
      }
  
      @Test
      public void lockstep() {
          final int[] counter = { 0 };
          Ix<Integer> source = Ix.range(1, 5)
                  .doOnNext(new IxConsumer<Integer>() {
                      @Override
                      public void accept(Integer v) {
                          counter[0]++;
                      }
                  })
                  .replay();
  
          Iterator<Integer> it1 = source.iterator();
          Iterator<Integer> it2 = source.iterator();
  
          Assert.assertEquals(1, it1.next().intValue());
          Assert.assertEquals(1, it2.next().intValue());
  
          Assert.assertEquals(2, it1.next().intValue());
          Assert.assertEquals(2, it2.next().intValue());
  
          Assert.assertEquals(3, it1.next().intValue());
          Assert.assertEquals(3, it2.next().intValue());
  
          Assert.assertEquals(4, it1.next().intValue());
          Assert.assertEquals(4, it2.next().intValue());
  
          Assert.assertEquals(5, it1.next().intValue());
          Assert.assertEquals(5, it2.next().intValue());
  
          Assert.assertFalse(it1.hasNext());
          Assert.assertFalse(it1.hasNext());
  
          Assert.assertEquals(5, counter[0]);
  
      }
  
      @Test
      public void empty() {
          Ix<Integer> source = Ix.<Integer>empty().replay();
  
          IxTestHelper.assertValues(source);
          IxTestHelper.assertValues(source);
          IxTestHelper.assertValues(source);
      }
  
      @Test
      public void replaySizeNormal() {
          final int[] counter = { 0 };
          Ix<Integer> source = Ix.range(1, 5)
                  .doOnNext(new IxConsumer<Integer>() {
                      @Override
                      public void accept(Integer v) {
                          counter[0]++;
                      }
                  })
                  .replay(10);
  
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
  
          Assert.assertEquals(5, counter[0]);
      }
  
      @Test
      public void replaySizeLimit() {
          final int[] counter = { 0 };
          Ix<Integer> source = Ix.range(1, 5)
                  .doOnNext(new IxConsumer<Integer>() {
                      @Override
                      public void accept(Integer v) {
                          counter[0]++;
                      }
                  })
                  .replay(2);
  
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
          IxTestHelper.assertValues(source, 4, 5);
          IxTestHelper.assertValues(source, 4, 5);
  
          Assert.assertEquals(5, counter[0]);
      }
  
      @Test
      public void replaySelectorNormal() {
  
          Ix<Integer> source = Ix.range(1, 5).replay(new IxFunction<Ix<Integer>, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Ix<Integer> o) {
                  return Ix.zip(o, o.skip(1), new IxFunction2<Integer, Integer, Integer>() {
                      @Override
                      public Integer apply(Integer t1, Integer t2) {
                          return t1 + t2;
                      }
                  });
              }
          });
  
          IxTestHelper.assertValues(source, 3, 5, 7, 9);
          IxTestHelper.assertValues(source, 3, 5, 7, 9);
      }
  
      @Test
      public void replaySizeSelectorLarge() {
  
          Ix<Integer> source = Ix.range(1, 5).replay(10, new IxFunction<Ix<Integer>, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Ix<Integer> o) {
                  return Ix.zip(o, o.skip(1), new IxFunction2<Integer, Integer, Integer>() {
                      @Override
                      public Integer apply(Integer t1, Integer t2) {
                          return t1 + t2;
                      }
                  });
              }
          });
  
          IxTestHelper.assertValues(source, 3, 5, 7, 9);
          IxTestHelper.assertValues(source, 3, 5, 7, 9);
      }
  
      @Test
      public void replaySizeSelectorSmall() {
  
          Ix<Integer> source = Ix.range(1, 5).replay(2, new IxFunction<Ix<Integer>, Iterable<Integer>>() {
              @Override
              public Iterable<Integer> apply(Ix<Integer> o) {
                  return Ix.zip(o, o.skip(1), new IxFunction2<Integer, Integer, Integer>() {
                      @Override
                      public Integer apply(Integer t1, Integer t2) {
                          return t1 + t2;
                      }
                  });
              }
          });
  
          IxTestHelper.assertValues(source, 3, 5, 7, 9);
          IxTestHelper.assertValues(source, 3, 5, 7, 9);
      }
  
      @Test
      public void replaySizeSelectorInnerEffect() {
  
          Ix<Integer> source = Ix.range(1, 5).replay(2, new IxFunction<Ix<Integer>, Iterable<Integer>>() {
              @SuppressWarnings("unchecked")
              @Override
              public Iterable<Integer> apply(Ix<Integer> o) {
                  return Ix.concatArray(o, o);
              }
          });
  
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5, 4, 5);
          IxTestHelper.assertValues(source, 1, 2, 3, 4, 5, 4, 5);
      }
  }
  